CodePen
JSFiddle
CodeSandbox
GitHub
replit
VS Code
Pastebin.com
JS Bin
CodeForces
LeetCode
Codechef
AlgoExpert.io
Project Euler
Interview Cake
interviewing.io
CodingInterview
CodePen CodeForcesBased on our record, CodePen should be more popular than CodeForces. It has been mentiond 513 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
> I vividly remember IE and many hacks to have css elements properly working in itโฆ The common advice now is to only use CSS that is supported in the last two major versions of each major browser. You can check any css property's support here: https://caniuse.com/ > Imho this is a reason why markdown and other rich-textual formats appeared. Markdown is a superset of html and through it contains css through the... - Source: Hacker News / 21 days ago
Thank you, heartfelt... For sharing an artwork, a miracle! Just in case, have you considered publishing the work at platforms as CodePen, where genius Artists/People express their art, too, as you?: // https://codepen.io/. - Source: Hacker News / about 2 months ago
Embed on DEV: If you prefer CodePen embed, create a Pen with that HTML and add to the post as: {% codepen https://codepen.io//pen/ %}. - Source: dev.to / 10 months ago
CodePen is where creativity meets frontend code. You can write HTML, CSS, and JavaScript and see results instantly in the browser. - Source: dev.to / about 1 year ago
For those preferring agent-based approaches, Replit Agent shines. Khris Steven, Founder of KhrisDigital Marketing, notes, "You can simply describe what you want your app to do in plain English, and Replit Agent will generate the code and deploy it." This natural language interface fosters collaboration, turning ideas into deployable apps in minutes. - Source: dev.to / about 1 year ago
Your preparation should not be random. Platforms like LeetCode, Codeforces, and GeeksforGeeks are toolsโbut what matters is how you use them. - Source: dev.to / 4 months ago
Most people who do competitive programming have moved to: . - Source: Hacker News / 8 months ago
At first, the problems on platforms like Codeforces felt overwhelming. But after a few rounds, I realized something important:. - Source: dev.to / 12 months ago
Check it out and start competing today: https://codeforces.com/. - Source: dev.to / 12 months ago
The researchers created their dataset from CodeContests and public Codeforces solutions, enriched with metadata. For supervised fine-tuning, they structured the data as prompt-completion pairs, using problem statements as prompts and solutions as completions. The balanced dataset contained 1.2 million samples, each averaging 1,500 tokens. - Source: dev.to / over 1 year ago
JSFiddle - Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.
LeetCode - Practice and level up your development skills and prepare for technical interviews.
CodeSandbox - Online playground for React
Codechef - CodeChef is a not-for-profit educational initiative by Directi, an Indian software company. It is a global programming community that fosters learning and friendly competition, built on top of the worldโs largest competitive programming platform.
GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
AlgoExpert.io - A better way to prep for tech interviews